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Finding the Fourth Proportional to 618,049,577.70, 927,074,366.55 and 209,105,728.20

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Solution

The fourth proportional to 618,049,577.70, 927,074,366.55 and 209,105,728.20 is: 313,658,592.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,049,577.70 : 927,074,366.55 = 209,105,728.20 : x
  2. Step 2: Convert to fraction form
    618,049,577.70/927,074,366.55 = 209,105,728.20/x
  3. Step 3: Cross multiply
    618,049,577.70x = 927,074,366.55 × 209,105,728.20
  4. Step 4: Simplify right side
    618,049,577.70x = 193,856,560,512,991,456
  5. Step 5: Solve for x
    x = 193,856,560,512,991,456/618,049,577.70
  6. Step 6: Final answer
    x = 313,658,592.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.